MFH: r542306

editors/emacs-devel: Update to 20200715 commit, 85eaa83

This is being merged to quarterly, because commit e98ddd6 from 20200701 is
sometimes dumping core when building on i386. While the underlying problem may
not yet be resolved, we (emacs@FreeBSD.org) have not observed any core dumps
with commit 85eaa83 from 20200715.

Approved by: portmgr (blanket)